Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
M-104 can be found northwest of Hermit Koco and vault that holds the red Emerald.
Source: https://gamerant.com/sonic-frontiers-m104-puzzle-guide/